Shadow puppets are made of hard leather.

皮影由皮革制成。

Edam is a semihard cheese traditionally sold in spheres.

Edam是一种半奶酪，传统上以球形出售。

The hard material here is silicon, and the soft material is silicone rubber.

我们选用的材料是硅， 软材料是硅橡胶。

Some projects create " living shorelines" made from natural elements rather than hard materials.

一些项目创造了由自然元素而非材料制成的“活海岸线”。

Modelling suggests that durum yields will sharply fall there if the temperature keeps on rising.

气候示，如果气温持续上升，那里的小麦产量将大幅下降。

Oaxaca cheese, more commonly known as quesillo, is a white, semihard, stretchy cheese.

瓦哈卡奶酪，俗称“克西”，是一种白色、半、有弹性的奶酪。

The two small stiff membranes you see under the first abdominal segment are like the skin of a drum.

你能看到在这第一腹节下面的这两膜就如同鼓的蒙皮一样。

Only plant cells have a cell wall, which is made of rigid cellulose that gives the plant structure.

但只有植物细胞有细胞壁，它是由纤维素组成，能形成植物的支撑架构。

Nature often smoothly, glides, swims or wiggles, without the rattling of rigid parts or the loud rubbing of surfaces.

自然界的生物通常流畅地滑动、游动、摆动，没有部件的响声，也没有表面之间的摩擦噪音。

Environmental damage can cause breaks in hard materials.

环境破坏会导致材料破裂。

Many of the sharks, do get bony cartilage vertebrae which do in fact fossilize which is contrary to common belief.

很多鲨鱼的确会有能够形成化石的骨化的脊椎，这跟一般人所认为的相反。

For the candidates, these two components are mounted on the elytra — the two most rigid wings on the insect.

对于演奏者这两部分都在它们的鞘翅上面——鞘翅是昆虫的两的翅膀。

Dry pasta is always durum wheat flour and water.

干意大利面总是小麦粉和水。

In Italy, we tend to use durum wheat.

在意大利，我们倾向于使用小麦。

This hard material is very stiff, so they do not have shock absorbing properties.

这种材料非常坚，因此它们不具有减震性能。

And what about durum wheat, which grows abundantly in Mediterranean lands and is used to make pasta, flatbreads and couscous?

那么盛产于地中海地区，被用来制作意大利面、扁面包和粗麦粉的小麦呢？

Formica is a type of hard plastic used for covering tables and working areas in kitchens-but it's not the oldest type.

Formica是一种用来覆盖桌子和厨房里的工作区的塑料——但它并不是最古老的类。

But with the new adhesive you could assemble this mix of hard and soft structures much more quickly.

但是使用新的粘合剂，您可以更快地组装这种和软结构的混合物。

Perhaps this option will be  needed if and when British Airways decides to introduce  a new hard product in First!

如果英国航空公司决定在 First! 推出新的产品，那么可能需要此选项。

The boom in trade of the rich-hued hardwood has already claimed 15 lives in 2011, and dozens more have been wounded by Thai soldiers.

2011年已有15人死于这种红色木材交易，数以十计的人被泰国士兵射伤。